I'm sure given the ingenuity of people who like to break games for the sake of doing it there may be glitches or other more "hacky" ways of doing it, but the power to duplicate anything you have to infinity and beyond is in this game by design (the iTunes file save system) and hasn't functionally changed from the original JJ. Not sure what the "secrecy" is about. If people want to potentially ruin their game experience, let them. If the developers were really paranoid about duping they wouldn't let you copy save files to your computer and back again.

Right, it was never an issue in JJ1 because you were only effecting yourself.Multiplayer adds complications.

1.Junk-Jack-Wiki2. The world is big, 256 blocks high and 768 across.3. Who is John Galt?4. Lack of objection does not indicate consent.5. We scream, we shout, we wail, we cry; but in the end we all must die.

I may know the dupemglitch as long with another user. I cant promise the other user who found it will domsomethingmlike griefing but it is 3% chance. I only dupe ores etc to give to people and help em (not 999 like 100 etc) i use it to help people who suffered those griefs and traps. I see them by the chests armor etc. i used the dupe so far for good and imwill only use it for good.mif i ever was to dupe tnt i will use it in my adventure world for quick mining or portal hunt. I am saying that specific people wont abuse it. Heck i dont need tnt. Inuse giga helmet against griefers. And i would use some tnt against those griefers if i could but i dont do that